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Correct; sum of angles of a triangle is 180 degrees.
Sum of all its sides.
The sum of the three interior angles of a triangle always total 180 degrees.
The sum of the angles should equal 180
The sum of interior angles in a triangle MUST add up to 180 degrees, or it is not a triangle. This works for ALL TRIANGLES! Also there must be exactly 3 angles, or it is not a triangle, hence the name Triangle. Tri (3) Angles180 degrees.